Swash zone fellow Sean Kilgallin watches as engineer Dennis Darnell, from the Scripps Institution of Oceanography, shifts an instrument to prevent it becoming submerged at high tide. The team set up several towers to record weather data such as wind speed and direction, which influence movement of the water and sediment below. Tidal flats such as these in Skagit Bay, Wash. are dominated by tidal flows rather than by large waves and are found in many places around the world, including northern Europe, Kuwait, Korea, and Cape Cod. (Photo by Steve Elgar)[back]
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